Do we follow the size of the average unit, or an extreme unit, when that unit [such as a human hand] is the measurement for the Shiur: Eruvin 30a, 30b, 48a
Cases where we consider an item which has the majority of the shiur, to be like the entire shiur - Rubo kiKulo
Entry of an item marked with tzaraat into a house, to make the house impure: Yevamot 103b
Cases where we consider an item which is as large as the Shiur to be as though it is smaller than the Shiur
Items requiring Burning have had their "Shiur" destroyed: Eruvin 80b; Yevamot 103b
Issues in Consumption
For an individual of extraordinary dimensions: Yoma 80a-b
Time-span for ingestion of the threshold amount such as of a prohibited food: Eruvin 4a-b; Pesachim 44a, 114b; Yoma 80b; Succah 5b-6a; Keritot 13a
All of the rabbinically ordained amounts are exact: Rosh HaShanah 13a
Considering a complete entity to be the equivalent of the threshold amount, even if it is smaller than that amount: Makkot 13a